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<td class="pageTitle" nowrap="true">Concept: 流程添加项</td><td width="100%">
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<td valign="top">流程添加项是一个特殊的流程，它外部定义现有流程的补充和更改而不直接修改流程。</td>
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    流程添加项是一个特殊的流程，它外部定义现有流程的补充和更改而不直接修改现有流程。它通过在单独的流程结构中描述这些补充和更改来实现此目标。此结构的元素通过使用“添加”和“替换”特化关系来与其他流程的元素关联。流程添加项通常与方法插件一起封装，它们使现有方法插件具有新的能力。
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    流程添加项是一种“流程插件”，它将补充细分结构插入到现有流程中，随后更新现有流程使其带有新的或更改过的能力。例如，J2EE 插件插入到独立于技术的主插件中。它可以更新在该插件中为 J2EE 特定活动定义的通用交付流程。相关的“.NET
    插件”可定义与该技术平台相关的类似更新。然后，由于分离了特定于技术的部分并且仅将根据需要来应用这些部分，因此流程工作人员可应用选定的插件，从而生成特定于技术的流程并使流程需要最少的维护。
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